Earnings Per Equity Share - Summary of Basic Earnings Per Share (Detail) ₨ / shares in Units, ₨ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Mar. 31, 2026
INR (₨)
₨ / shares
shares
|
Mar. 31, 2026
USD ($)
shares
|
Mar. 31, 2025
INR (₨)
₨ / shares
shares
|
Mar. 31, 2024
INR (₨)
₨ / shares
shares
|
|
| Earnings per share [abstract] | ||||
| Profit attributable to equity holders of the Company | ₨ 131,974 | $ 1,407 | ₨ 131,354 | ₨ 110,452 |
| Weighted average number of equity shares outstanding | shares | 10,476,247,846 | 10,476,247,846 | 10,456,741,552 | 10,576,571,110 |
| Basic earnings per equity share | ₨ / shares | ₨ 12.6 | ₨ 12.56 | ₨ 10.44 | |